<html style="direction: rtl; -moz-column-width: 0pt; white-space: pre-line;"><head><script>

function boom()
{
  document.documentElement.offsetHeight;
  document.documentElement.style.fontSize = "200%";
  document.documentElement.offsetHeight;
}

</script></head><body onload="boom();">

A B
C</body></html>
